The most recent update, just before the game went public, was the addition of the warp circle. It allows you to "time warp" to future days that you've survived to, as long as you have a high enough score beforehand.

The location:

Go to Barbara's home and, from the view of Barbara, take a right.  When you reach the end, take another right and you'll see two obelisks - Past that is the warp circle.

However, you won't be able to reach it without some mobility! Either have the skateboard, alpaca, jetpack, geist, or any other setup that works for you and you'll be able to get to the warp circle safely! 

How it works:

Starting at 100,000 Score to make it to day 2, it doubles every day! If you've made it to day 2 previously, you'll be able to return to that day and retry it without the hassle of waiting! This is especially useful for later tiers where you can ramp up score very quickly, and, thus, speed up the time. 

Another use is that it will automatically speed up all spawns. This can act as a "reset", or quickly spawn rarer enemies like Bert.

Getting enough score early game:

If you don't quite have the ability to destroy houses in ten seconds, there are other methods.

If you've completed Cappy's questline, you should have a skateboard and beacon cap. Both of them double score from doing tricks. If you run around with a flying enemy or something that allows you to get the best flips, you can get around ~4000-5000 score per flip.

Additionally, you can eat quest givers (2500) and houses (4500) to gain lots of score, or eat the mysterious urns if you know where they are.

Keep in mind that your score gain gets higher depending on your level! Each tier also acts as a multiplier to XP gain, so you should also use the highest tier mutator you have when gaining large amounts of score. 

Additionally, augmentors and abilities like the flamethrower give a multiplier to score, so save that ability for when you're just about to defeat an NPC or house :)

But most of all -  BE CREATIVE! There are all sorts of ways to get scores. Even a couple "bugs" I left in for fun.